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Finding the Fourth Proportional to 78,869, 108,848.76 and 44,885.74

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Solution

The fourth proportional to 78,869, 108,848.76 and 44,885.74 is: 61,947.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,869 : 108,848.76 = 44,885.74 : x
  2. Step 2: Convert to fraction form
    78,869/108,848.76 = 44,885.74/x
  3. Step 3: Cross multiply
    78,869x = 108,848.76 × 44,885.74
  4. Step 4: Simplify right side
    78,869x = 4,885,757,140.68
  5. Step 5: Solve for x
    x = 4,885,757,140.68/78,869
  6. Step 6: Final answer
    x = 61,947.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.